lancet arch vs Gothic arch

lancet arch and Gothic arch both are nouns.

Word	Noun	Adjective	Verb	Adverb
lancet arch	Yes	No	No	No
Gothic arch	Yes	No	No	No

As nouns, Gothic arch is a hypernym of lancet arch; that is, Gothic arch is a word with a broader meaning than lancet arch:

lancet arch: an acutely pointed Gothic arch, like a lance
Gothic arch: a pointed arch; usually has a joint (instead of a keystone) at the apex

lancet arch (noun)	Gothic arch (noun)
an acutely pointed Gothic arch, like a lance	a pointed arch; usually has a joint (instead of a keystone) at the apex